Continuity mistake: During the opening credits, Niles, Roz, and Daphne are sitting on the couch. Niles has put Frasier's biography on the coffee table but when the shot changes and Frasier comes in, Niles is suddenly holding the bio in his hand.
Continuity mistake: Frasier is handed a beer with an inch or two of froth. When the shot changes the froth has all but disappeared. (00:15:30)
Answer: It equals the record of James Arness of "Gunsmoke" for the actor who's played the same part on TV NOT in a soap opera. If you include soaps there are two main contenders - William Roache, who's been playing Ken Barlow in "Coronation Street" in the UK since 1960. Don Hastings has been playing Robert Hughes in US soap "As the World Turns" since 1960 as well.